"A copy of any and all questions, questionnaires and information requests used by the IRS to attempt to elicit additional information from 501(c)(3)-(6) applicants from Feb. 1, 2010, to the present regarding their donor lists, volunteer lists, financial support for, and relationships with, political candidates, and any and all similar information."

... to ...

"Any written communication, memos, policy drafts, or other documents related to the interpretation of section 501(c)(4) of the Internal Revenue Code since 2009."

The senators set a deadline of May 31, 2013. There's no mention of being able to file for an extension on that. Miller, who was forced to submit his resignation, is expected to still be in the acting commissioner's post until around June 8, according to ABC News.

There's a copy of the lawmakers' request here and in the box below. Just click on the headline "Senators Baucus and Hatch have some questions for the IRS."